.container{
    background: #f1f3f5;
    .nav-left{
        //  background: red;
        height: 100vh;
        background: #001529;
        .nav-top{
               height: 100px;
                display: flex;
                align-items: center;
                justify-content: center;
                img{
                    width: 45px;
                }
                h1{
                    display: inline-block;
                    color: aliceblue;
                    font-size: 20px;
                    
                }
        }
    }
}